Max and Phoebe start a fight between Billy and Nora so they can avoid riding a scary roller coaster, but their scheme backfires when the feud escalates.
Max and Phoebe realize they have been neglecting their younger siblings when Billy and Nora bond with an outgoing pair of teens at a gamer's convention.
Max is nervous when his girlfriend auditions for the romantic lead in the school play opposite a cute boy, so he convinces Phoebe to audition for the same role.
Allison is concerned about Max's pranks and threatens to break up with him if he doesn't stop. Meanwhile, Phoebe and the rest of the family try to be nice and neighborly to Mrs. Wong who in return uses them to service her guests.
Phoebe must baby-sit President Kuckbutt's trouble-making teen daughter as her latest superhero mission, but the assignment quickly gets out of control.
Hank and Phoebe think the house has been robbed when they return home and discover the furniture missing, but Max admits he hid everything and forces them to earn their belongings back before Barb discovers the truth.
Phoebe and Max return to their elementary school to complete a hero assessment exam and discover that the instructor is a former classmate that Max tormented.
Max must finally make a choice between fighting for good or evil when the Villain League threatens to halt Phoebe's superhero ascension and destroy the Thundermans.